Lancet



APY 22, 1930 c. FREDERlKsr-:N 1,755,777

LNCET med Feb. 12. 1929 erp? - y UNITED ssrnl cLAUs FREDERIKSEN, oF NQRDIO'RG; DENMARK APatented Apr. 2.2, 1930 TESv LANGET Appueation mea February 12, 1929, serial ivdff-eeege'sgane in;V fe'emanyiiay'2,119282' This invention is directed to a lancet de-` signed particularly for'use with the yteats of cows to permit aloo'sening of the cheeselike `mass which is, under certain circum- 5 stances, deposited in the teats and obstructsi thepflow of milk. f In some conditions` of health, and particularly after hoof and mouth disease, the teats of cows are liable to a cheeselike deposit whichy 10 seriously obstructs the flow of milk there` A through. Heretofore the removal of Vthis obstruction, has required the services yof a Y veterinarian andthe elimination ofthe trouble has proven a source of no little expense.

The primary l object ofthe present invention is the production of an instrumentin the.v

. form of a lancet capable of being operated by anyone and which will pierce'andprovide a cruciform incision in the cheese-like mass,

@tending toa loosening' of this mass and itsv 39 mula-ted. mass therein.

FigureA t is a similar view showing the incision formed in the mass following the first operation of the instrument. p

\ Figure 5 is a similar view showing the openingv formed in the mass following the yfinal operation of the instrument.V

Figures 6, 7 and 8 are views'in front felevation of modified forms of the instrument.

Figure 9'is a view in elevation showing the v`instrument provided with-V Va 'relatively vmovable handlein which the instrument'may Y vbe housed when not in use.-

In the form illustrated more 'particularly` in Figures 1 and 2, the instrument comprises to a keenk cutting edge, indicated at .sleeve-like member Vof increasedL diameter. Y

.through the teat of a ycow showing the accuf .semicircular shape and seats in anotch v J a rod-like body a having a pointed terminalV d of oval form inV cross section,` the majorV Immediately :,below,l the;kl point, f lthey rod is reduced in diameter andbelowthe-reduced.V plVOnafsuch rod .'isi'providedl vwith; ai disk e arranged at right anglesto-and yprojectingbeyend the =surface-of-the red and-.forming ai 5a limit-for thefinsertion ofthe ..1aneet. It-fispreferredv that the sharpened-or. 'cutting edge extend from thejextrenepoint of theto'el tethedfskefae Clearly shown nthedrawugs.

A'lzhe ter "iialrfoffthere@frembte'1ifr01n1-the cutting? L.; sfformedtefprevidee (handle portionf1 preferably by formi-11g fermetures. bend 1 thergod in theformishown; i1i-,Eig,-, iesalearndt poifntofftlieinst 4 entrisyroundedasindicatedateZ,.and;th .handigeisili tamtam @fa In the form shown in Figure `7, the piercing point, instead of being conicalas in ures 1 and`2, is elongated, as shown at n, and the handle o in this form is of oval conigura-V tien and secure'd'to the rod. y

In the form shown in Figure-8, the lancet is generally of the coniiguration shown in -Figure 1, except that in this instance the limiting disk e is slidably mounted on the rod o through the medium of a collar p, the disk being Vadjustably held on the rod by a setscrew'g.

Of course this adjustable form of stop disk is not peculiar tothe form shown in Figure 8 but obviously may be used with and is con-l templated as a partV of the construction ofv i any-of the other forms illustrated.

' In the form shown in Figure 9, the instrument is of the type illustrated in Figure 1 but is pivotedat t in a handle s. In this form, the limiting disk, here indicated atcu, is of so when the instrument is closed. A finger member fw is connected Vto the rod a to provide for conveniently," opening the instrument when desired. Obviously, in this; form the instrument may be substantiallyvhoused in the handle s and conveniently Vcarried when not in use. I e

lThe cheese-like deposit for which the presn entl instrument is particularly effective is shown as a moreor less solid mass at h col- .finsteren'11Figure@,{tlie'eeitreneei l lecting in the teat indicated at'g, as shown in Figure 8. On the initial insertion of the instrument, an incision z' of elongated oval form is made in and through this mass h whereupon the instrument is withdrawn and reinserted atright angles to its initial position, the latter insertion forming an opening f:

similar to but at right angles to the opening z'. A erueiform opening, as indicated in Figure 5, is thus formed in the mass, admitting air and permitting subsequent discharge of the mass but primarily opening a canal through the mass for the flow of milk.

Obviously, afterforming the opening'the usual oanula may be inserted and allowed to remain until all liability of lelosing 11p-the opening is past. 'v

lThe instrument to avoid'any irritation Vor obstruction, and may be nickel-plated or otherwise nished to any desired extent.

vWhat is claimed to be new is:

An instrument of the lancet type for-the Y loosening of the oheese-like'mass in the teats of Vvows, comprising a rod terminally vprovided with a double edged blade, the rod ,inwardly of the point being of reduced diameter, and alimiting disk carriedV by the rod l below the portion of reduced diameter.

In testimony whereof lI aHX my signature. CLAUSVVFREDERIKSEN. [L 57.] Y

K yas a whole is constructed y. of metal and-is preferably highly .inishedd 

